<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
      body{
          text-align: center;
          text-decoration: underline;
          color: darkcyan;
          font-size: 30px;
      }
      ul{
          list-style: none;
      }
      table{
          border-collapse: collapse;
      }
    
    </style>
</head>
<body>
    <!-- 文本和字体相关属性都是可以继承的 -->
    <p>hello world</p>
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
    </ul>
    <div>
        hello
        <p>world</p>
    </div>
</body>
</html>